add NavigationWindow style

src/Shared/HandyControlDemo_Shared/Window/NativeCommonWindow.xaml

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+<Window x:Class="HandyControlDemo.Window.NativeCommonWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        WindowStartupLocation="CenterScreen"
+        xmlns:langs="clr-namespace:HandyControlDemo.Properties.Langs"
+        Title="{x:Static langs:Lang.Title}" 
+        Height="450" 
+        Width="800" 
+        Icon="/HandyControlDemo;component/Resources/Img/icon.ico">
+</Window>

src/Shared/HandyControlDemo_Shared/Window/NativeCommonWindow.xaml.cs

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+namespace HandyControlDemo.Window
+{
+    public partial class NativeCommonWindow
+    {
+        public NativeCommonWindow()
+        {
+            InitializeComponent();
+        }
+    }
+}

src/Shared/HandyControlDemo_Shared/Window/NavigationWindow.xaml

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+<NavigationWindow x:Class="HandyControlDemo.Window.NavigationWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        WindowStartupLocation="CenterScreen"
+        xmlns:langs="clr-namespace:HandyControlDemo.Properties.Langs"
+        Title="{x:Static langs:Lang.Title}" 
+        Height="450" 
+        Width="800" 
+        Icon="/HandyControlDemo;component/Resources/Img/icon.ico">
+</NavigationWindow>

src/Shared/HandyControlDemo_Shared/Window/NavigationWindow.xaml.cs

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+using System.Collections.Generic;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Controls.Primitives;
+using HandyControl.Tools.Extension;
+
+namespace HandyControlDemo.Window
+{
+    public partial class NavigationWindow
+    {
+        private readonly List<Page> _pageList;
+
+        public NavigationWindow()
+        {
+            InitializeComponent();
+
+            AddHandler(ButtonBase.ClickEvent, new RoutedEventHandler(Button_Click));
+
+            _pageList = new List<Page>();
+            for (var i = 0; i < 5; i++)
+            {
+                _pageList.Add(CreatePage(i));
+            }
+
+            Navigate(_pageList[0]);
+        }
+
+        private Page CreatePage(int index)
+        {
+            var indexStr = index.ToString();
+            var button = new Button
+            {
+                HorizontalAlignment = HorizontalAlignment.Center,
+                VerticalAlignment = VerticalAlignment.Center,
+                Content = indexStr,
+                Width = 320,
+                Tag = indexStr
+            };
+
+            return new Page
+            {
+                Title = indexStr,
+                Content = button
+            };
+        }
+
+        private void Button_Click(object sender, RoutedEventArgs e)
+        {
+            if (e.OriginalSource is Button button && button.Tag is string tag)
+            {
+                var index = tag.Value<int>() + 1;
+                Navigate(index >= _pageList.Count ? _pageList[0] : _pageList[index]);
+            }
+        }
+    }
+}